Magnetic Eddy-Current and Thermal Coupled Models for the Finite-Element Behavior Analysis of Underground Power Cables

Rachek, M.; Larbi, S.

doi:10.1109/tmag.2008.2004212

Cited by 19 publications

(9 citation statements)

References 8 publications

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“…It should be remarked that few studies have been reported coupling intrinsic MF mitigation techniques and the thermal formulation [19]. Thus, in [61], the magnetic eddy-current and transient thermal problems are joined for modeling UPC. Such problems in 2-D cases have been solved by FEM and the resulting formulation is applied to three-phase multi-circuit UPC, considering different phase rearrangements in order to reduce the MF levels above the ground surface.…”

Section: Underground Power Linesmentioning

confidence: 99%

A Survey on Optimization Techniques Applied to Magnetic Field Mitigation in Power Systems

2019

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With the continuous increase in the number and relevance of electric transmission lines and distribution networks, there is a higher exposure to the magnetic fields generated by them, leading to more cases of human electrosensitivity, which greatly necessitates the design and development of magnetic field mitigation procedures and, at the same time, the need to minimize both performance degradation and deterioration in the efficiency as well. During the last four decades, fruitful results have been reported about extremely low frequency magnetic field mitigation, giving a wide variety of solutions. This survey paper aims to give a comprehensive overview of cost-effective optimization techniques destined to magnetic field mitigation in power systems, with particular attention to the results reported in the last decade.

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Section: Underground Power Linesmentioning

confidence: 99%

A Survey on Optimization Techniques Applied to Magnetic Field Mitigation in Power Systems

2019

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“…This may introduce difficulties in performing an analytical calculation of the heat generated by the conductor. Thus, the electric-thermal coupling module in finite element software ANSYS is adopted to carry out a numerical analysis to obtain the cable joint's steady-state thermal distribution [31]. The current and voltage boundary conditions are set as:…”

Section: Boundary Conditions In Modellingmentioning

confidence: 99%

Investigation of the Ampacity of a Prefabricated Straight-Through Joint of High Voltage Cable

Wang

Liu

et al. 2017

Energies

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This paper presents a theoretical and experimental study on the ampacity of the prefabricated straight-through joint of a 110 kV high voltage cable. Thermal modelling revealed that the critical spot limiting the ampacity of this type of cable joint is located on its crosslinked polyethylene (XLPE) insulation section. The axial distribution of the thermal field in this type of cable joint was also determined. An algorithm for assessing ampacity in this type of cable joint was developed. Experiments were conducted on a real cable system with a prefabricated straight-through joint under different loading conditions. The experiments show a good agreement with the thermal modelling results.

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“…In the analysis, electromagnetic field is considered up to infinity and then vanishes at the boundary Г 1 . The 2-D eddy current diffusion problem in a time-harmonic regime can be stated as follows [6]:…”

Section: Finite Element Modelmentioning

confidence: 99%

Magnetic Eddy-Current, Fluid and Thermal Coupled Model for the Finite Element Behavior of Gas-Insulated Bus Bars

Wu¹,

Zhou²,

Pei³

2016

Proceedings of the 2015 4th International Conference on Sensors, Measurement and Intelligent Materials

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This paper describes a coupled magnetic eddy-current, fluid and thermal finite-element model to analyze the steady and transient thermal behavior of a three-phase gas-insulated bus bar (GIB). The magnetic eddy-current field is indirectly coupled into the fluid and thermal fields through the power loss density while considering the temperature dependent electrical conductivity. As a new methodology, multiple species transport technique is introduced into the thermal model using computational fluid dynamics (CFD), circumventing the difficulty of applying temperature and geometry dependent heat transfer coefficient on the model boundaries. Good agreement is found between the CFD and experimental results. The proposed methodology is further used to predict the steady and transient thermal behaviors of the GIB under the effects of various gas pressures, gas types, electrical loads, and ambient temperatures, which provides useful sensitivity information for GIB designers in the product development process.

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Magnetic Eddy-Current and Thermal Coupled Models for the Finite-Element Behavior Analysis of Underground Power Cables

Cited by 19 publications

References 8 publications

A Survey on Optimization Techniques Applied to Magnetic Field Mitigation in Power Systems

A Survey on Optimization Techniques Applied to Magnetic Field Mitigation in Power Systems

Investigation of the Ampacity of a Prefabricated Straight-Through Joint of High Voltage Cable

Magnetic Eddy-Current, Fluid and Thermal Coupled Model for the Finite Element Behavior of Gas-Insulated Bus Bars

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